Im having a problem with a particular mail account in plesk. When sending a message to this account, it is returned with the following error. ME-MTA-001 Internal Error : Could not find connector for recipient [SMTP:firstname.lastname@example.org]. It has been returned to the sender address. I know why it is providing this error message, the problem is, I cannot fix it. In the properties for that mail account (in the mail enable administrator), under the "addresses" tab, their should be an entry that says [SMTP:email@example.com] Their is not however, and when I attempt to add that entry, I receive an error noting that it is already defined for "[SMT" elsewhere in the postoffice. I could not find this anywhere, and attempting to remove the mail account in plesk results in various plesk errors and basically mail enable and plesk become unsynchronized for that specific mail account. - removing the account from mail enable does not help either Has anyone dealt with this problem, or does anyone have any suggestions ?